Mitsubishi Montero (2004+). Manual — part 1190

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-95

NOTE: After inspecting junction block connectors D-209 and
D-208, inspect the wiring harness. If junction block connectors
are damaged, repair or replace them. Refer to GROUP 00E,
Harness Connector Inspection

P.00E-2

. Then go to Step 8.

Q: Are harness wire between SRS-ECU connector E-08

(terminal No.13) and the ignition switch connector
D-204 (terminal No.2) in good condition?
YES : Go to Step 8.
NO : Repair the harness wire between SRS-ECU

connector E-08 and the ignition switch connector
D-204. Then go to Step 8.

STEP 4. Check a burned-out fuse.
(1) Replace the fuse.
(2) Turn the ignition switch to the "ON" position, wait for at least

one minute and then turn the ignition switch to the "LOCK"
(OFF) position.

(3) Check the fuse.
Q: Is the fuse in good condition?

YES : Go to Step 8.
NO : Go to Step 5.

AC204257

CONNECTORS : D-208, D-209

AI

D-209

D-208

D-208 HARNESS SIDE
CONNECTOR (REAR VIEW)

D-209 HARNESS SIDE
CONNECTOR (REAR VIEW)

1

2

3

5

6

4

JUNCTION BLOCK
(FRONT VIEW)

5 4 3

2

12

13

10

11

7

8

1

6

9

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-96

STEP 5. Check the circuit between the SRS-ECU and the
junction block connector D-209.
(1) Disconnect junction block connector D-209, and measure at

the wiring harness.

CAUTION

Do not insert a test probe into the terminal from its front
side directly as the connector contact pressure may be
weakened.
(2) Check for continuity between D-209 harness connector

terminal 10 and body ground.
It should be open circuit.

Q: Does continuity exist?

YES : Go to Step 6.
NO : Go to Step 8.

AC204257

CONNECTORS : D-208, D-209

AI

D-209

D-208

D-208 HARNESS SIDE
CONNECTOR (REAR VIEW)

D-209 HARNESS SIDE
CONNECTOR (REAR VIEW)

1

2

3

5

6

4

JUNCTION BLOCK
(FRONT VIEW)

5 4 3

2

12

13

10

11

7

8

1

6

9

AC204459

5

4

3

2

12 13

10 11

7 8

1

6

9

AC

D-209 HARNESS SIDE
CONNECTOR
(REAR VIEW)

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-97

STEP 6. Check the power supply circuit for short circuit to
ground at the SRS-ECU connector E-08.
(1) Disconnect SRS-ECU connector E-08, and measure at the

wiring harness.

CAUTION

Do not insert a test probe into the terminal from its front
side directly as the connector contact pressure may be
weakened.
(2) Check for continuity between E-08 harness connector

terminal 13 and body ground.
It should be open circuit.

Q: Is the circuit normal?

YES : Erase the diagnostic trouble code memory, and check

the diagnostic trouble code. If DTC 42 sets, replace
the SRS-ECU (Refer to

P.52B-215

). Then go to Step

8.

NO : Go to Step 7.

ACX01478AM

CONNECTOR: E-08

E-08 (Y)

HARNESS SIDE
CONNECTOR
(REAR VIEW)

AC202026

13 14 15 16 17 18 19 20

5 6 7 8 9 10 11 12

1 2

3 4

AK

E-08 HARNESS SIDE
CONNECTOR (REAR VIEW)

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-98

STEP 7. Check the harness wires between SRS-ECU
connector E-08 (terminal No.13) and junction block
connector D-209 (terminal No.10).
Q: Are harness wires between SRS-ECU connector E-08

(terminal No.13) and junction block connector D-209
(terminal No.10) in good condition?
YES : Go to Step 8.
NO : Repair the harness wires between SRS-ECU

connector E-08 and junction block connector D-209.
Then go to Step 8.

STEP 8. Recheck for diagnostic trouble code.
Q: Is DTC 42 set?

YES : Return to Step 1.
NO : The procedure is complete. (If no malfunctions are not

found in all steps, an intermittent malfunction is
suspected. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

Cope with Intermittent Malfunction

P.00-6

).

ACX01478AH

CONNECTOR: E-08

E-08 (Y)

HARNESS
CONNECTOR:
HARNESS SIDE

AC204257

CONNECTOR : D-209

AJ

D-209

D-209 HARNESS SIDE
CONNECTOR (FRONT VIEW)

JUNCTION BLOCK
(FRONT VIEW)

5 4 3

2

12

13

10

11

7

8

1

6

9